Magnetism and Electromagnetism - Short Question and Answer

Magnetism and Electromagnetism - Short Question and Answer Points : magnetism and electromagnetism - short question and answer Q. 1. An electron travelling south to north posses through an electric field directed from west to east. In which direction should a magnetic field be applied so that electron goes undeflected? Ans : The electric force on a charge is parallel to the electric field. In the present case, the electric force on the electron is towards west. In order to balance it, the magnetic force on the electron should be directed towards east. By right-hand rule, the magnetic field should act vertically downward. Q. 2. A circular loop of radius 0.1 m carries a current JA and is placed in a uniform magnetic field of 0.5 T The magnetic field is perpendicular to the plane of the loop. What is the force experienced by the loop? Ans : A current carrying loop is equivalent to a magnetic dipole. A magnetic dipole does not experience any force in a uniform magnetic field. Therefore, this current carrying loop will not experience any net force.

Estimation of Electrical Wiring Multi Choice Questions & Answers

Estimation of Electrical Wiring Multi Choice Questions & Answers Points : estimation of electrical wiring multi choice questions and answers, estimation of electrical wiring mcqs, objective Multi Choice Questions & Answers

1. In bath rooms, all non-electrical metal work including must be bonded together and earthed.
   (a) Bath tubs
   (b) Water pipes
   (c) Sinks
   (d) All of above
2. Do not exceed per circuit
   (a) 800 watts
   (b) 10 lights or fans
   (c) 15 lights
   (d) All of above
3. Do not exceed per circuit - numbers of plug points for power circuit.
   (a) 2
   (b) 3
   (c) 4
   (d) 1
4. Use heavily insulated, flexible cables for _______ appliances.
   (a) Domestic & Commercial
   (b) Industrial
   (c) Commercial
   (d) Domestic

Estimation of Electrical Wiring True & False

Estimation of Electrical Wiring True and False Points : estimation of electrical wiring true and false estimation of electrical wiring objective True & False

1. Anyhow material handling charges should not be more than 5% (max.) of material cost. (T)
2. Overhead charges will generally be assumed as 10% to 25% of the total cost. (F)
3. In large installations, tool charges aren’t be included. (F)

Estimation of Electrical Wiring blanks

Estimation of Electrical Wiring blanks: Points : estimation of electrical wiring fill in the blanks, estimation of electrical wiring objective Fill in the blanks

1. Length of conduit required can be calculated by going through the plan of the building.
2. Allow 10% of total length for wastage in any system.
3. To calculate the length of wire, take the length of conduit after allowing wastage.

Electronics Instruments - Multiple Choice Questions and Answer

Electronics Instruments - Multiple Choice Questions and Answer Points : Electronics Instruments, electrical, mcqs, evaluation, judgment, gauging, rating, consideration, analysis, examination, workup, test, review, objective type question and answer, multiple choice questions and answer 1. The meters using some sort of electromechanical mechanism and its readout is displayed by pointer is called:
a) Digital meter
(b) Analog meter
(c) Display unit
(d) None of above

2. Several different people viewing the same meter will usually record the same reading, the meter will be.
(a) Signal Generator
(b) Analog meter
(c) Digital meter
(d) All of above

3. Digital meters work on the principle of:
(a) Quantization
(b) Induction
(c) Repulsion
(d) Jhermocouple

Measurement of Resistance Location of Cable Faults - Multiple Choice Questions and Answer

Measurement of Resistance Location of Cable Faults - Multiple Choice Questions and Answer Points : measurement of resistance location of cable faults, electrical instruments and measurement, electrical, mcqs, evaluation, objective type question and answer, multiple choice questions and answer 1. The resistance of 100 Kilo-ohms and above falls in the class of....
(a) Low resistance
(b) Medium resistance
(c) High resistance
(d) All of above

2. Wheatstone Bridge is used to measure.
(a) Medium resistance
(b) Low resistance
(c) High resistance
(d) All of above

Miscellaneous Indicating Instruments - Multiple Choice Questions and Answer

Miscellaneous Indicating Instruments - Multiple Choice Questions and Answer Points : miscellaneous indicating instruments, electrical, mcqs, evaluation, objective type question and answer, multiple choice questions and answer 1. Three fixed coils R, Y and B of moving iron power factor meter are mutually with the axis at
(a) 180°
(b) 120°
(c) 90°
(d) both (b) & (c)

2. When three fixed coils of moving iron power factor meter are connected to 3-phase supply, the flux produced is...
(a) Rotating
(b) Stationary
(c) Synchronously rotating
(d) AU of above

Fundamental of Electrical Measurements - Multiple Choice Questions and Answers

Fundamental of Electrical Measurements - Multiple Choice Questions and Answers Points : Fundamental of Electrical Measurements, Electrical, MCQS, Objective type question, Multiple choice questions and answer Select the correct answers of the following items:

1. Measurement may be done by....
a. Direct method
b. Indirect method
c. Both (a) & (b)
d. None of above

2. A Tangent Galvanometer is a type of...
a. Secondary instrument
b. Absolute instrument
c. Recording instrument
d. Digital instrument